The rear servo piston in Chrysler 47RE and 48RE '97-later units can get wedged in the bore, causing bind in Reverse. Intermittent binding leads to bore wear and band damage. The improved design and material of Sonnax rear servo piston 22912C eliminates these concerns for consistent rear band apply.

Verify OE piston by referring to image shown here.
Modified seal ridges prevent piston from sticking in case bore
Billet aluminum won’t crack like OE cast piston
2.460" O.D. piston


Part No.
Application
OE Part No.
O.D.


22912C
47RE, 48RE '97-Later
52118745
2.46"

22912B
47RE/RH '94–'96*
4531229
2.46"

22912
46RE/RH, A727
2801281
2.80"

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